This website uses cookies to deliver some of our products and services as well as for analytics and to provide you a more personalized experience. Click here to learn more. By continuing to use this site, you agree to our use of cookies. We've also updated our Privacy Notice. Click here to see what's new.

This website uses cookies to deliver some of our products and services as well as for analytics and to provide you a more personalized experience. Click here to learn more. By continuing to use this site, you agree to our use of cookies. We've also updated our Privacy Notice. Click here to see what's new.

About Optics & Photonics TopicsOSA Publishing developed the Optics and Photonics Topics to help organize its diverse content more accurately by topic area. This topic browser contains over 2400 terms and is organized in a three-level hierarchy. Read more.

Topics can be refined further in the search results. The Topic facet will reveal the high-level topics associated with the articles returned in the search results.

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

a Conjugated.b Data obtained by comparator measurements on Fig. 1 of reference 6.c From reference 12.d See footnote 13.e No maxima or inflections observed at this wave-length.

Table II

Absorption and reproducibility for 1.30N KOH-ethylene glycol and 11 percent KOH-glycerol solutions heated in the presence of air for 25 minutes at 180°C. Spectral densities for 10 percent solutions in absolute ethanol, 1 cm at 260 mμ, 5 cm at 316 mμ (i.e., thicknesses and concentrations commonly used for analysis of animal fats) vs. equal layers of absolute ethanol. Each group of six samples was run simultaneously in the constant temperature bath.

Table IV

Specific extinction coefficients in ethanol, and wave-lengths of absorption maxima for conjugated fatty materials before (k) and after (k′) heating for 30 minutes at 180°C in KOH-glycerol solution. The ratio k′/k gives approximately the proportion of conjugated material undestroyed by the treatment.

a See reference 1.b See reference 2.c See reference 3.d See reference 7.e See reference 8.

Table VI

Analysis of miscellaneous fatty materials for polyunsaturated constituents. Effect of variations in isomerization medium, size of sample, and temperature; reproducibility of results; and analysis of known mixtures.

a Conjugated.b Data obtained by comparator measurements on Fig. 1 of reference 6.c From reference 12.d See footnote 13.e No maxima or inflections observed at this wave-length.

Table II

Absorption and reproducibility for 1.30N KOH-ethylene glycol and 11 percent KOH-glycerol solutions heated in the presence of air for 25 minutes at 180°C. Spectral densities for 10 percent solutions in absolute ethanol, 1 cm at 260 mμ, 5 cm at 316 mμ (i.e., thicknesses and concentrations commonly used for analysis of animal fats) vs. equal layers of absolute ethanol. Each group of six samples was run simultaneously in the constant temperature bath.

Table IV

Specific extinction coefficients in ethanol, and wave-lengths of absorption maxima for conjugated fatty materials before (k) and after (k′) heating for 30 minutes at 180°C in KOH-glycerol solution. The ratio k′/k gives approximately the proportion of conjugated material undestroyed by the treatment.

a See reference 1.b See reference 2.c See reference 3.d See reference 7.e See reference 8.

Table VI

Analysis of miscellaneous fatty materials for polyunsaturated constituents. Effect of variations in isomerization medium, size of sample, and temperature; reproducibility of results; and analysis of known mixtures.